This is a brand new set of 96mm pistons with biral cylinders for the vw type 4 and Porsche 914 1.7/1.8l with the stock 66mm stock crank. The pistons are a flat top slipper skirt design. Biral liners are a cast iron sleeve with aluminum fins, making them lighter and dissipate heat better. They slip into both the 1.7 and 1.8l cases. 1.7l heads will need to be opened, no machane work is needed on the 1.8l

Engine type : Porsche 914, vw type 4, bus or sandrail.

Engine size: 1700 & 1800cc

Stroke: 66mm stroke pistons

Cylinders: biral

Pistons: hypereutectic aluminum alloy

Compression height: 41.3mm

Set includes: 4 pistons, 4 cylinders, 4 pins and a set of rings